code: def _pairwise(iterable):
      "s -> (s0,s1), (s1,s2), (s2, s3), ..."
      a, b = itertools.tee(iterable)
      next(b, None)
      return zip(a, b)
  
file_path: MONAI/tests/test_version.py
imports: from __future__ import annotations
  import itertools
  import unittest
  from parameterized import parameterized
  from monai.utils import version_geq, version_leq
label_desc: Use image node_id 1 for calling a global function with example usage: _pairwise(iterable) and returns: zip